Sizing device



July 9, 1935. A. P. STEINER SIZING DEVICE Filed May 4, 1932 INVENTQR41mm: 1? Sta'mm:

ATTNEY Patented July 9,1935 a 2,007,507

UNITED STATESMPATENT OFFICE Amos P. Steiner, Waynesboro, Pa.., asslgnorto Landis Tool Company, Waynesboro, Pa., a corporation of Pennsylvania iApplication May 4, 1932, Serial No. 609,220

3 Claims. (01. set-112) This invention relates to sizing devices and itsangles to the screw 24. A tension spring 26 is object is to provide adevice which is extremely attached to the bracket l6 and to the arm 23sensitive to variations in the size of the work and tends to hold thecontact element 2| in enwith means for'indicating such variations.gagement with the work. Within the bracket 5 A further object is toprovide a sizing device I6 is a chamber 21 with which communicates a 5having a sizing element and an indicator which fluid pressure line 28. Arestricted nozzle elemay be positioned some distance from the work ment2!! is positioned in communication with the being sized. chamber 21.Fluid under pressure is permitted Referring to the accompanying drawing,which to issue from the line 28 through the chamber 21 is made a parthereof and on which similar refand the restricted opening in the nozzle29 eslo erence characters indicate similar parts, caping between theouter end of the nozzle and Figure 1 is an end elevation of a grindingmathe inner end of the adjustable screw 24 carried chine showing mydevice applied thereto, and by the arm 23. The restricted opening in theFigure 2, an end elevation of a grinding ma nozzle 29 tapers toward theoutlet. By reason chine showing the details of the device and showofthis structure the stream of air issuing from 15 ing it applied to thesizing of aball race. the nozzle is held together for a greater distanceFor purposes of illustration the invention will from the end of thenozzle than if the walls of be shown and described as applied to agrinding the restriction were parallel or flared. The fluid machine andthe grinding machine selected for conduit 28 is preferably flexible topermit the an illustrative purposes is one for rindin internal necessaryos i n of the work Support I5. races of ball bearings. The invention,however, This co duit is att ched to a fluid line 30 in is in no senselimited to grinding ball races nor is which fluid is confined under arelatively constant it necessarily limited togrinding machines forpressure. In communication with the fluid line obviously it could beadapted to other machines 28 is another fluid conduit 3| which is atached with equal appropriateness. to a pressure gauge 32. The gauge 32may be 25 In the drawing numeral l0 refers to the bed mounted upon thewheel base so as to be in conof a grinding machine having a wheel bas l|venient view of an operator of a machine or it supporting a grindingwheel l2. Conventional may be positioned in any other suitable ormechanism I3 is provided for adjusting the whee venient place as thereis no connection between so base toward and irom work piece M here shownit and any op at port of the wheel base as the inside race for ballbearings.- The work In Operation w fl under a given p is mounted in anysuitable way upon an oscillat- Sure in the line 30 d W t element 24 at aing work support I5 so that the groove in the p d t i d p s t on m hnozzle 9. flu d work may be rotated about the periphery oi the ay ap r hthe l 28 a a constant 35 grinding wheel to properly grind the groove inrate. This will afiect the pressure in the lina 28 35 the periphery ofthe work. Means for gauging d in the line 3| which P u Will regitel thesize of the work consists of a bracket i6 seon the gauge As the x e sstock s removed curedv upon the oscillating work support Is by from thework the contact element 2| swings means of bolts H or other securingmeans. In counterclockwise ahcllt its Pi t Point is b the upper side ofthis bracket is a bearing for a ing screw 24 nearer to the nozzle 29 andrestrict- 40 shaft l8 upon which shaft is mounted an arm ing h fl w offluid thr u h th n zl As th IS. The arm is split at its upper end tofit; work decreasesinsize the pressure in lines 28 and around the shaftl8 and is secured to the shaft 3| bu p and this increased Pressure y heby means of a tightening screw 20. A rough ad d c d on the au BefcleStarting a justment of the arm |9 about the shaft I8 is progrinding p aon the gauge will pr y 45 Vided by the screw 20. The lower end of thhave been set so that when the hand or marker arm l9 carries a contactpoint 2| which is seat a predetermined Point it Will indicate that curedin position by means of a screw 22. vsethe work is reduced to thecorrect size. From cured to the shaft l8 and preferably on the side theforegoing descrip i W ll apparent that of the bracket lii'opposite fromthe arm I9 is a I have p ov d a y Sensitive device Which 50 lever or arm23. This lever is rigidly secured to will indicate when work has be t0the the shaft Ill. The outer end of the arm 23 carries desired S anadjustable screw 24 which is lacked in ad- I will be o viou to ho kill din the ar justed position by means of a screw 25 which that various chas may be ad in y d i passes through the end of the arm at right withoutdeparting from the spirit of the invens 55 tion and therefore I do notlimit myself to what is shown in the drawing and described in thespecification, but only as indicated in the appended claims. 1

Having thus fully described my said invention, what I claim as new anddesire to secure by Letters Patent, is:

1. In a grinding machine, the combination of a grinding wheel and a worksizing device including a nozzle from which fluid under pressure issues,a fluid pressure controlled means connected to the nozzle for indicatingchanges in pressure and thereby the size of the work as it is beingground, a pivoted lever having one end thereof associated with saidnozzle for controlling the flow of fluid from said nozzle, and meanscarried by the lever and contacting with the surface of the work beingground whereby the, position of the lever is determined by the surfaceof the work, said lever and said nozzle being disposed so that the fluidflow from the nozzle is decreased as the work approaches finished size.

2. In a. grinding machine, the combination of a grinding wheel and awork sizing device including a nozzle from which fluid under pressureissues, a fluid pressure controlled means connected to the nozzle forindicating changes in pressure and thereby the-size of the work as it'is being ground, a pivoted lever having one end thereof disposedadjacent said nozzle, a member capable of adjustment to difi'erent setpositions on said lever and disposed opposite said nozzle forcontrolling the flow of fluid from said nozzle, and means carried by thelever and contacting with the surface of the work being ground wherebythe position of the lever is determined by the surface of the work, saidlever and said nozzle being disposed so that the fluid flow from thenozzle is decreased as the work approaches finished size.

3. In a grinding machine, the combination of a grinding wheel and a worksizing device including a nozzle from which fluid under pressure issues,a fluid pressure controlled means connected to the nozzle for indicatingchanges in pressure and thereby the size of the work as it is beingground, a pivoted lever having one end thereof disposed adjacent saidnozzle, a member capable of adjustment to different set positions onsaid lever and disposed opposite said nozzle for controlling the flow offluid from said nozzle, and means carried by the lever and contactingwith the surface of the work being ground whereby the position of thelever is determined by the surface of the work, said lever being pivotedintermediate its ends and arranged relative to said nozzle so that allmovements of the lever caused by the decrease in the size of the workcauses the adjustable member carried thereby to be moved toward thenozzle for decreasing the fluid flow from the nozzle.

AMOS P. STEINER.

